chapter one maintenance /chapter one maintenance

chapter one maintenance

1. Computer Maintenance And Technical Support BY walelign kindie 20/05/2013

2. Chapter One Basics What is a Personal Computer (PC)? Personal Computer (PC) is a computing device made up of many distinct electronic components that all function together in order to accomplish some useful task. Computer components that can be removed and replaced with a component of similar function in order to improve performance. Each component has a very specific function. personal computer has input devices that provide data to the system unit for processing and output devices that generate information from the processed data.

3. How a Computer Works

4. Protect The Equipment Against Static Electricity Electrostatic discharge (ESD), commonly known as static electricity, is an electrical charge at rest. ESD can cause two types of damage in an electronic component: catastrophic failure and upset failure . A catastrophic failure destroys the component beyond use. An upset failure damages the component so that it does not perform well, even though it may still function to some degree. Upset failures are more difficult to detect because they are not consistent and not easily observed. Both types of failures permanently affect the device.

5. ESD….. To protect the computer against ESD , always ground yourself before touching electronic components, including the hard drive, motherboard, expansion cards, processors, and memory modules. You can ground yourself and the computer parts by using one or more of the following static control devices or methods: Ground bracelet . also called an antistatic wrist strap or ESD bracelet, is a strap you wear around your wrist. Antistatic gloves . You can purchase antistatic gloves designed to prevent an ESD discharge between you and a device as you pick it up and handle it.

6. ESD…..

7. Lab procedures and maintenance tools and Safety rules Computer labs, or computer clusters, give many people access to computer programs and the Internet. Schools, public libraries, hotels and government offices and companies set up computer labs that contain a large quantity of computers, printers, scanners and other equipment. Lab computers are used often by people with varying degrees of computer training. This means they are at risk from viruses, corrupt files, spyware and malfunction. You must maintain lab computers regularly in order to ensure that they don't crash prematurely.

8. Steps Establish the perimeters of your computer lab according to your organization's rules.. Seek the help of an IT service or IT department, if you are not knowledgeable about computers. Post a "Computer Lab Rules" sheet that clearly states computer lab restrictions. Plug all your computer equipment into a surge protector. Set up a firewall Set up weekly updates or automatic updates for your lab computers. Install an anti-virus program on the computers and/or network.

9. Steps…. Install an anti-spyware program on your computers and/or network. Back up your computers on a regular basis. Use the hard disc cleanup and defragmentation utilities regularly. Turn off all computers by selecting the shutdown option on the desktop. Clean your computer lab regularly.

10. Maintenance Toolkit 2/2/2021 There are two major types of tools: hardware and software Toolkits. 1. Hardware Maintenance Toolkit Anyone who wants to work on any type of equipment must have the proper tools for the task.

11. Maintenance Toolkit…. 2. Software Toolkit In addition to the hardware tools explained earlier, the technician should have a collection of software tools at his disposal. Typical software tools used by computer technicians include the following: Emergency boot/start disks to get failing systems started Hardware diagnostic-utility packages Embedded operating-system software tools and utilities Antivirus and malware utilities Driver packages Data recovery software’s Operating Systems, etc.

12. Preventative Maintenance Preventive maintenance is a regular and systematic inspection, cleaning, and replacement of worn parts, materials, and systems. Preventive maintenance helps to prevent failure of parts, materials, and systems by ensuring that they are in good working order. Preventive maintenance reduces the probability of hardware or software problems by systematically and periodically checking hardware and software to ensure proper operation.

13. Preventative Maintenance….. Hardware Check the condition of cables, components, and peripherals. Clean components to reduce the likelihood of overheating. Repair or replace any components that show signs of damage or excessive wear. Use the following tasks as a guide to create a hardware maintenance program: Remove dust from fan intakes. Remove dust from the power supply. Remove dust from components inside the computer. Clean the mouse and keyboard. Check and secure loose cables…

14. Preventative Maintenance….. What you can clean ? Computer case cleaning Computer mouse cleaning Keyboard DVD or CD-ROM drive Floppy drive Hard drive Monitor screen Components inside computer and printer..

15. Preventative Maintenance ….. Software Verify that installed software is current. Follow the policies of the organization when installing security updates, operating system updates, and program updates. Use the tasks listed as a guide to create a software maintenance Review security updates. Review software updates. Review driver updates. Update virus definition files. Scan for viruses and spyware. Remove unwanted programs Scan hard drives for errors. Defragment hard drives

16. Preventative Maintenance ….. Benefits of preventive maintenance Be proactive in computer equipment maintenance and data protection. By performing regular maintenance routines, you can reduce potential hardware and software problems. Increases data protection Extends the life of the components Increases equipment stability Reduces repair costs Reduces the number of equipment failures

17. Preventative Maintenance ….. 2/2/2021 Applying preventive maintenance plan Component Maintenance How often Inside the Case Make sure air vents clear Use compressed air to blow the dust out of the case, or use a vacuum to clean , power supply and fan Ensure that chips and expansion cards are firmly Yearly CMOS setup Keep a backup record of setup Whenever changes are made Floppy Drive Only clean the floppy drive when the drive is not work When the drive fails Hard drive Preform regular backup Automatically execute a virus scan program, at startup Defragment and recover lost clusters regularly Do not allow smoking around the PC Monthly ,weakly

18. Preventative Maintenance ….. Keyboard Keep the keyboard clean Keep the keyboard away from liquid Monthly Always Mouse Clean the mouse rollers and ball Monthly Monitor Clean the screen with soft cloth Make sure air vents clear At least monthly, Always Software If directed by your employer, check that only authorized software is present. Regularly delete file from the recycle bin and temp directories At least monthly Printers Clean out dust and bits of paper, using compressed air and vacuum. Clean the papers and ribbon paths with a soft, lint-free cloth. At least monthly or as recommended by the manufacturer Applying preventive maintenance plan 2/2/2021

19. Preventative Maintenance….. Troubleshooting is a systematic approach to locating the cause of a fault in a computer system. A good preventive maintenance program helps minimize failures. With fewer failures, there is less troubleshooting to do, thus saving an organization time and money. With regard to computer systems you can follow the following basic diagnostic procedures. Step 1: Define the Problem Step 2: Check the Simple Material First Step 3: Check to see if it is User Error

20. Preventative Maintenance ….. Step 4: Restart the Computer Step 5: Determine If the Problem Is Hardware or Software Related Step 6: If the Problem Is Hardware Related, Determine Which Component Is Failing Step 7: Check Service Information Sources Step 8: Ask for Help

21. Tank you By walelign k